Gun computer having target rate integrating means for determining target position



Jam l5, 1952 D. c. BQMBERGER Erm. 2,582,474

GUN COMPUTER HAVING TARGET RATE INTEGRATING MEANS FOR DETERMINING TARGET POSITION Filed Dec, 29, 1944 19fSheets-Sheet 2 TELEPHONE SIW TCHHARD D. C. BOMBERGER /Nl/ENTORS WE. INGERSON h. G. 06H BV ANDRA/EV Jan- 15 1952 D. c. BOMBERGER ETAL 2,582,474

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ATTORNEY Jan. 15, 1952 D C, BOMBERGER El-AL 2,582,474

GUN COMPUTER HAVING TARGET RATE INTEGRATING MEANS FOR DETERMINING TARGET POSITION Filed Dec. 29, 1944 1 9 Sheets-Sheet 19 x cmos Bnl/5H r ums aRus/-l 427 42a 545 549 546 55/ 552 547 55o 54a 55a 554 s RELAY OPERAT/ON TABLE .RE/ Ars CAM SWITCHES -D. C. BOMBERGER /N VEN TORS W E /NGERSON H. G. OCI- By Mm A 7' TORNE V Patented Jan. 15, 1952 UNITED STATES PATENT OFFICE GUN COMPUTER HAVING TARGET RATE INTEGRATING MEANS FOR DETERMIN- ING TARGET POSITION ration of New York Application December 29, 1944, Serial No. 570,282

(Cl. 23S-61.5)

16 Claims. l

'I his invention relates to computing systems, and particularly to systems involving computations related to the displacement of a body.

The object of the invention is apparatus formingl the source of a voltage varying proportionally to the displacement of a body.

A feature of the invention is an integrating device controlled by a voltage proportional to the speed of the body to generate a voltage proportional to the displacement of the body.

Another feature of the invention is means for controlling the integrating device so that the integration will commence with a desired initial displacement.

Another feature of the invention is means for integrating the estimated speed of the body during a desired time interval and comparing the displacement represented by the integrated speed with the actual displacement of the body during the time interval to indicate any error in the estimate of the speed of the body. Another feature of the invention is means for correcting the error in displacement during the 'desired time interval by adjustment of the estimated speed.

i further feature of the invention is means for timing the desired time intervals of two integrators and indicating the proper time for adjustment of the estimated speed.

lThe invention may be embodied in an electromechanical computer for predicting the future position of a moving target from observations of the present position of the target. The observing apparatus controls devices forming sources of voltages proportional to the coordinates Xo and Y0 of the present position of the target. These voltages control computing elements which compute the coordinates of the predicted position of the target, and the angles of elevation and train to direct a gun to the predicted positions. In some cases, it may be apparent that the target is about to disappear behind some obscuring medium such as fog, a smoke screen, or other obstruction, and it is desirable to be able to continue to re at the target, even though observation of the target may be' impossible. In accordance with the present invention, an integrating circuit generates a synthetic course which is an extrapolation, along a straight line at constant speed, of the present course of the target. The circuit is adjusted to generate voltages equal to the voltages controlled "by the observations and having the same rates of change as those voltages, so that during the following time interval, the generated voltages will be equal to the values which the voltages controlled by the observations would have had if it had been possible to continue observations of the target. The generated voltages are substituted for the voltages controlled by the observations in the control of the computing elements.

In the drawings:

Fig. l schematically shows a system for transmitting data from thel observing stations to the computer;

Fig. 2 schematically shows a system for generating voltages proportional to the coordinates of the present position of the target; y

Fig, 3 schematically shows a system for synthetically generating voltages proportional to the coordinates of the present position of the target, or voltages proportional to the rates of change in said coordinates;

Fig.'4 schematically shows a System for indicating the present position of the target with respect to the gun, for generating voltages proportional to the rates of change in the coordinates, and voltages proportional to the coordinates of the predicted position of the target;

Fig. 5 schematically shows a system for indicating the azimuths and quadrant elevations of two guns, generating a voltage proportional to the range of the second gun, and generating voltages proportional to the maximum effects of the Wind;

Fig. 6 schematically shows a system for indieatingr the deflection angle of a lirst gun, for generatingvoltages proportional to the range of the first gun, and for indicating the ballistic elevation angle of a. second gun;

Figs. 7 and 8 schematically show a system for indicating the `ballistic elevation angle of a first gun; j

Figs. 9 and10 show, in elevation and plan, the geometric relationships between the observation stations, target and guns;

Fig. 11 schematically shows a summing amplier used in Figs. l to 8;

Fig. 12 schematically shows a control circuit used in Figs. 4, 5, 6, 8; n

Figs. 13A to 13H schematically show a number of potentiometer networks;

Figs. 14 to 18 show curves related to the net- 

